The SS20L goniometer is a dual output device that can provide simultaneous measurements around two orthogonal rotational axes (e.g., wrist flexion/extension and radial/ulnar deviations). The gauge mechanism allows for accurate measurement of polycentric joints. Telescopic endblocks compensate for changes in distance between the two mounting points as the limb moves. Goniometers attach to the body using TAPE2 medical adhesive tape. One MP3X/45 channel is required for each output; to measure both axes simultaneously, this twin-axis goniometer requires two MP3X/45 channels.
The SS20L and SS21L are dual output devices used to measure limb angular movement.
The SS22L and SS23L are single output devices used to measure axial rotation about a single plane (e.g., forearm pronation/supination).
The SS24L is used to measure finger joint movement (single axis goniometer).
Suggested reading for additional information on goniometry: Legnani G, Zappa B, Casolo F, Adamini R, Magnani PL. A model of an electro-goniometer and its calibration for biomechanical applications. Med Eng Phys. 2000 Dec;22(10):711-22.
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